Enrollees choose priorities for Medicare.
D000368:Aged; D016009:Chi-Square Distribution; D003627:Data Interpretation, Statistical; D005260:Female; D006292:Health Priorities; D006801:Humans; D007342:Insurance Benefits; D008297:Male; D006278:Medicare; D010358:Patient Participation; D012959:Socioeconomic Factors; D014481:United States